Deuteronomy 4:31 in the King James Version
(For the LORD thy God is a merciful God;) he will not forsake thee, neither destroy thee, nor forget the covenant of thy fathers which he sware unto them.
Context
30 When you are in oppression, and all these things have come on you, in the latter days you shall return to the LORD your God and listen to his voice.
31 For the LORD your God is a merciful God. He will not fail you nor destroy you, nor forget the covenant of your fathers which he swore to them.
32 For ask now of the days that are past, which were before you, since the day that God created man on the earth, and from the one end of the sky to the other, whether there has been anything as great as this thing is, or has been heard like it?