NASB 1995
by loving the LORD your God, by obeying His voice, and by holding fast to Him; for this is your life and the length of your days, that you may live in the land which the LORD swore to your fathers, to Abraham, Isaac, and Jacob, to give them."

American Standard Version
to love Jehovah thy God, to obey his voice, and to cleave unto him; for he is thy life, and the length of thy days; that thou mayest dwell in the land which Jehovah sware unto thy fathers, to Abraham, to Isaac, and to Jacob, to give them.

Berean Study Bible
and that you may love the LORD your God, obey Him, and hold fast to Him. For He is your life, and He will prolong your life in the land that the LORD swore to give to your fathers, to Abraham, Isaac, and Jacob.”

Douay-Rheims Bible
And that thou mayst love the Lord thy God, and obey his voice, and adhere to him (for he is thy life, and the length of thy days,) that thou mayst dwell in the land, for which the Lord swore to thy fathers Abraham, Isaac, and Jacob that he would give it them.

English Revised Version
to love the LORD thy God, to obey his voice, and to cleave unto him: for he is thy life, and the length of thy days: that thou mayest dwell in the land which the LORD sware unto thy fathers, to Abraham, to Isaac, and to Jacob, to give them.

King James Bible
That thou mayest love the LORD thy God, and that thou mayest obey his voice, and that thou mayest cleave unto him: for he is thy life, and the length of thy days: that thou mayest dwell in the land which the LORD sware unto thy fathers, to Abraham, to Isaac, and to Jacob, to give them.

World English Bible
to love Yahweh your God, to obey his voice, and to cling to him; for he is your life, and the length of your days; that you may dwell in the land which Yahweh swore to your fathers, to Abraham, to Isaac, and to Jacob, to give them.

Young's Literal Translation
to love Jehovah thy God, to hearken to His voice, and to cleave to Him (for He is thy life, and the length of thy days), to dwell on the ground which Jehovah hath sworn to thy fathers, to Abraham, to Isaac, and to Jacob, to give to them.'

Deuteronomy 30:20 Additional Translations ...