Book of Isaiah Chapter 14 Vs. 15

Israel's Remnant Taunts Babylon 

Isa 14:15 Yet thou shalt be brought down to hell, to the sides of the pit.

Yet thou shalt... This will be the lot of all who seek to be like God the wrong way (Mat. 25:41; Rev. 14:9-11; 20:10-15; 21:8; 22:15).

Yet...

אַךּ

’ak

A particle meaning only, surely, but. Its emphatic use is translated as indeed or surely (Gen. 26:9; 29:14; 1Kgs. 22:32; Jer. 5:4). It takes on a restrictive meaning and is translated as only (Gen. 7:23; 9:4, NASB) or just as (Gen. 27:13; Jdg. 10:15, NASB). Its contrastive sense, but, however, or nevertheless, is also found (Jer. 34:4, NASB).

thou shalt be brought down...

יָרַד

yarad

A verb meaning to go down, to descend. It is used of motion both literally or figuratively of someone or something coming down. It is used figuratively of the Lord's coming down to observe something or to make an announcement, e.g., the Tower of Babel or the announcement of the Exodus (Gen. 11:5, 11:7; Exo. 3:8; 19:11, 19:18). It is used of people coming down from a mountain (Exo. 19:14); of birds descending from the air (Hos. 7:12), etc. It is used to describe valleys sinking (Psm. 104:8). A crown may "come down" as a sign of humility and falling from power (Jer. 13:17-18). It is used figuratively of going down to Sheol (Gen. 37:35); or of breaking into, going down, apart, into tears (cf. Psm. 119:136; Isa. 15:3). It depicts the falling or coming down of the pride of might (Eze. 30:6). It describes fire from heaven or a pillar of fire coming down (Exo. 33:9; 2Kgs. 1:10, 1:12, 1:14). It is used to depict the path of a boundary line descending down from one location to another (Jos. 16:3).

to...

אֵל

’el, אֶל

’el

A preposition meaning to, into, concerning. It has the basic meaning of toward. It is used in all kinds of situations indicating direction (Gen. 2:19; 16:11; 18:7; Lev. 1:16). It is used metaphorically to refer to speaking to someone (Gen. 8:15) or sexual intercourse (Gen. 16:2; Num. 25:1). It indicates direction when things face each other (Num. 12:8). Its use in the idiom hinn^eni ’el indicates motion toward (Gen. 4:8). Other meanings according to context are: as far as (Jer. 51:9); into (Jon. 1:5); to sit at (Gen. 24:11; 1Kgs. 13:20). Used figuratively, it can mean with regard to something (2Sam. 1:24). When used with other prepositions, it indicates direction or location according to the preposition it is being combined with (Jos. 15:13; 17:4; 1Kgs. 8:6; 2Kgs. 9:18).

It is used in place of or interchangeably for the preposition ‛al and takes on the meaning of upon, on (Jos. 5:14; Jdg. 6:37).

hell...

שְׁאוֹל

š^e’ôl, שְׁאֹל

š^e’ol

A noun meaning the world of the dead, Sheol, the grave, death, the depths. The word describes the underworld but usually in the sense of the grave and is most often translated as grave. Jacob described himself as going to the grave upon Joseph's supposed death (Gen. 37:35; 42:38); Korah, Dathan, and Abiram went down into the ground, which becomes their grave, when God judges them (Num. 16:30, 16:33; 1Sam. 2:6). David described his brush with death at the hands of Saul as feeling the ropes or bands of the grave clutching him (2Sam. 22:6). The Lord declares that He will ransom His people from the grave or Sheol (Hos. 13:14). Habak-kuk declared that the grave's desire for more victims is never satiated (Hab. 2:5).

The word means depths or Sheol. Job called the ways of the Almighty higher than heaven and lower than Sheol or the depths of the earth (Job 11:8). The psalmist could not escape the Lord even in the lowest depths of the earth, in contrast to the high heavens (Psm. 139:8; Amos 9:2). It means the deepest valley or depths of the earth in Isa. 7:11.

In a few cases, Sheol seems to mean death or a similar concept; that Abaddon (destruction) lies uncovered seems to be matched with Sheol's meaning of death (Job 26:6). It means death or the grave, for neither is ever satisfied (Prov. 7:27; cf. Isa. 38:10) The word is best translated as death or the depths in Deut. 32:22.

Sheol or the grave is the place of the wicked (Psm. 9:17,18; Psm. 31:17,18); Ezekiel pictured it as the place of the uncircumcised (Eze. 31:15; 32:21, 32:27). Israel's search for more wickedness and apostasy took them to the depths of Sheol (Isa. 57:9). On the other hand, the righteous were not made for the grave or Sheol; it was not their proper abode. They were not left in the grave or Sheol (Psm. 16:10) but were rescued from that place (Psm. 49:15,16). Adulterers and fornicators were, metaphorically, described as in the lower parts of Sheol or the grave (Prov. 9:18). Sheol and Abaddon (Destruction) are as open to the eyes of God as are the hearts and thoughts of humankind; there is nothing mysterious about them to Him (Prov. 15:11).

to... same as to above.

the sides...

יַרְכָה

yarkah, יְרֵכָה

y^erekah

A feminine noun referring to a remote area, a border, the highest part, the far end. It refers to something toward the back or side, distant, far away. It refers to the part of Zebulun most distant from Jerusalem, toward the Mediterranean Sea and north (Gen. 49:13). It refers to the back or rear of a tent or building (Exo. 26:22-23). It indicates the part of a mountain farthest away (Jdg. 19:1, 19:18; 2Kgs. 19:23); of the farthest part of the earth (Jer. 6:22; 25:32); of the northern territories (Isa. 14:13). It refers to the remotest parts of the pit in Sheol, its most remote areas (Isa. 14:15). It refers to the rear of an inner room, such as the Most Holy Place (1Kgs. 6:16); the inner recesses of the hold of a ship (Jon. 1:5); a cave (1Sam. 24:3,4); or a house (Amos 6:10).

of the pit...

בּוֹר

bôr

A masculine noun meaning pit, cistern, well. The term can refer to rock-hewn reservoirs or man-made wells. When empty, such cisterns served as perfect prisons (i.e., Joseph Gen. 37:20, 37:22, 37:24, 37:28, 29 and Jeremiah Jer. 38:6-7, 38:9-11, 13). The semantic range extends to prisons in general. Joseph refers to Pharaoh's dungeon as bôr (Gen. 40:15). Figuratively, it carries positive and negative connotations. Positively, it can signify a man's wife (Prov. 5:15), and Sarah is the cistern of Israel (Isa. 51:1). Negatively, it represents death (Prov. 28:17); Sheol (Psm. 30:3,4); exile (Zec. 9:11).

The language used here, of course, is hyperbolical. Yet he would be brought low to the grave (pit is a synonym for grave). Nothing could save him from death and from decay in the grave.