New Revised Standard Version
If they listen, and serve him, they complete their days in prosperity, and their years in pleasantness.

Contemporary English Version
And if they obey, they will be successful and happy from then on.

New American Bible
If they listen and serve him, they spend their days in prosperity, their years in happiness.

Douay-Rheims Bible
If they shall hear and observe, they shall accomplish their days in good, and their years in glory.

If they shall hear and observe, they shall accomplish their days in good, and their years in glory.

If

Job 22:21 Submit thyself then to him, and be at peace: and thereby thou shalt have the best fruits.

Deuteronomy 4:30 After all the things aforesaid shall find thee, in the latter time thou shalt return to the Lord thy God, and shalt hear his voice.

Jeremiah 7:23 But this thing I commanded them, saying: Hearken to my voice, and I will be your God, and you shall be my people: and walk ye in all the way that I have commanded you, that it may be well with you.

Jeremiah 26:13 Now therefore amend your ways, and your doings, and hearken to the voice of the Lord your God: and the Lord will repent him of the evil that he hath spoken against you.

Romans 6:17 But thanks be to God, that you were the servants of sin but have obeyed from the heart unto that form of doctrine into which you have been delivered.

Hebrews 11:8 By faith he that is called Abraham obeyed to go out into a place which he was to receive for an inheritance. And he went out, not knowing whither he went.

spend

Job 11:13-19 But thou hast hardened thy heart, and hast spread thy hands to him. . . .

Job 21:11 Their little ones go out like a flock, and their children dance and play.

Job 22:23 If thou wilt return to the Almighty, thou shalt be built up, and shalt put away iniquity far from thy tabernacle.

Job 42:12 And the Lord blessed the latter end of Job more than his beginning. And he had fourteen thousand sheep, and six thousand camels, and a thousand yoke of oxen, and a thousand she asses.

Ecclesiastes 9:2,3 But all things are kept uncertain for the time to come, because all things equally happen to the just and to the wicked, to the good and to the evil, to the clean and to the unclean, to him that offereth victims, and to him that despiseth sacrifices. As the good is, so also is the sinner: as the perjured, so he also that sweareth truth. . . .

James 5:5 You have feasted upon earth: and in riotousness you have nourished your hearts, in the day of slaughter.

Revelation 18:7 As much as she hath glorified herself and lived in delicacies, so much torment and sorrow give ye to her. Because she saith in her heart: I sit a queen and am no widow: and sorrow I shall not see.