Deuteronomy 11:13

And it hath been -- if thou hearken diligently unto My commands which I am commanding you to-day, to love Jehovah your God, and to serve Him with all your heart, and with all your soul --

Deuteronomy 4:29

And -- ye have sought from thence Jehovah thy God, and hast found, when thou seekest Him with all thy heart, and with all thy soul,

Deuteronomy 6:17

ye do diligently keep the commands of Jehovah your God, and His testimonies, and His statutes which He hath commanded thee,

Deuteronomy 10:12

'And now, Israel, what is Jehovah thy God asking from thee, except to fear Jehovah thy God, to walk in all His ways, and to love Him, and to serve Jehovah thy God with all thy heart, and with all thy soul,

Deuteronomy 6:5-6

and thou hast loved Jehovah thy God with all thy heart, and with all thy soul, and with all thy might,

Deuteronomy 11:8

and ye have kept all the command which I am commanding thee to-day, so that ye are strong, and have gone in, and possessed the land whither ye are passing over to possess it,

Deuteronomy 11:22

For, if ye diligently keep all this command which I am commanding you -- to do it, to love Jehovah your God, to walk in all His ways, and to cleave to Him,

Psalm 119:4

Thou hast commanded us Thy precepts to keep diligently,

Treasury of Scripture Knowledge

Summary

And it shall come to pass, if ye shall hearken diligently unto my commandments which I command you this day, to love the LORD your God, and to serve him with all your heart and with all your soul,

Bible References

Diligently

Deuteronomy 11:8
and ye have kept all the command which I am commanding thee to-day, so that ye are strong, and have gone in, and possessed the land whither ye are passing over to possess it,
Deuteronomy 6:17
ye do diligently keep the commands of Jehovah your God, and His testimonies, and His statutes which He hath commanded thee,
Psalm 119:4
Thou hast commanded us Thy precepts to keep diligently,

General references

Leviticus 26:3
'If in My statutes ye walk, and My commands ye keep, and have done them,
Deuteronomy 6:17
ye do diligently keep the commands of Jehovah your God, and His testimonies, and His statutes which He hath commanded thee,
Deuteronomy 15:5
'Only, if thou dost diligently hearken to the voice of Jehovah thy God, to observe to do all this command which I am commanding thee to-day,
Psalm 119:4
Thou hast commanded us Thy precepts to keep diligently,