Numbers 35:28

for the manslayer should have remained in the city of his refuge until the death of the high-priest; but after the death of the high-priest he may return into the land of his possession.

John 15:4-6

Abide in me and I in you. As the branch cannot bear fruit of itself unless it abide in the vine, thus neither can ye unless ye abide in me.

Acts 11:23

who, having arrived and seeing the grace of God, rejoiced, and exhorted all with purpose of heart to abide with the Lord;

Acts 27:31

Paul said to the centurion and the soldiers, Unless these abide in the ship ye cannot be saved.

Hebrews 3:14

For we are become companions of the Christ if indeed we hold the beginning of the assurance firm to the end;

Hebrews 6:4-8

For it is impossible to renew again to repentance those once enlightened, and who have tasted of the heavenly gift, and have been made partakers of the Holy Spirit,

Hebrews 9:11-12

But Christ being come high priest of the good things to come, by the better and more perfect tabernacle not made with hand, (that is, not of this creation,)

Hebrews 9:15-17

And for this reason he is mediator of a new covenant, so that, death having taken place for redemption of the transgressions under the first covenant, the called might receive the promise of the eternal inheritance.

Hebrews 10:26-30

For where we sin wilfully after receiving the knowledge of the truth, there no longer remains any sacrifice for sins,

Hebrews 10:39

But we are not drawers back to perdition, but of faith to saving the soul.

Treasury of Scripture Knowledge

Summary

Because he should have remained in the city of his refuge until the death of the high priest: but after the death of the high priest the slayer shall return into the land of his possession.

After the death

Bible References

He should

John 15:4
Abide in me and I in you. As the branch cannot bear fruit of itself unless it abide in the vine, thus neither can ye unless ye abide in me.
Acts 11:23
who, having arrived and seeing the grace of God, rejoiced, and exhorted all with purpose of heart to abide with the Lord;
Acts 27:31
Paul said to the centurion and the soldiers, Unless these abide in the ship ye cannot be saved.
Hebrews 3:14
For we are become companions of the Christ if indeed we hold the beginning of the assurance firm to the end;
Hebrews 6:4
For it is impossible to renew again to repentance those once enlightened, and who have tasted of the heavenly gift, and have been made partakers of the Holy Spirit,
Hebrews 10:26
For where we sin wilfully after receiving the knowledge of the truth, there no longer remains any sacrifice for sins,

After the death

Hebrews 9:11
But Christ being come high priest of the good things to come, by the better and more perfect tabernacle not made with hand, (that is, not of this creation,)