New Revised Standard Version
but I will not remove from him my steadfast love, or be false to my faithfulness.

Contemporary English Version
But I will always love David and faithfully keep all of my promises to him.

New American Bible
But I will not take my mercy from him, nor will I betray my bond of faithfulness.

Douay-Rheims Bible
But my mercy I will not take away from him: nor will I suffer my truth to fail.

But my mercy I will not take away from him: nor will I suffer my truth to fail.

nevertheless

2 Samuel 7:13,15 He shall build a house to my name, and I will establish the throne of his kingdom fore ever. . . .

1 Kings 11:13,32,36 Neither will I take away the whole kingdom; but I will give one tribe to thy son, for the sake of David, my servant, and Jerusalem, which I have chosen. . . .

Isaiah 54:8-10 In a moment of indignation have I hid my face a little while from thee, but with everlasting kindness have I had mercy on thee, said the Lord thy Redeemer. . . .

Jeremiah 33:20-26 Thus saith the Lord: if my covenant, with the day can be made void, and my covenant with the night, that there should not be day and night in their season: . . .

Lamentations 3:31,32 Caph. For the Lord will not cast off for ever. . . .

1 Corinthians 15:25 For he must reign, until he hath put all his enemies under his feet.

not utterly take.

Psalm 89:39 Thou hast overthrown the covenant of thy servant: thou hast profaned his sanctuary on the earth.

1 Samuel 15:29 But the triumpher in Israel will not spare, and will not be moved to repentance: for he is not a man that he should repent.

fail.

Hebrews 6:18 That by two immutable things in which it is impossible for God to lie, we may have the strongest comfort, we who have fled for refuge to hold fast the hope set before us.