Numbers 35:28

because he should have remained in his city of refuge until the death of the high priest: but after the death of the high priest the manslayer shall 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, except it abide in the vine; so neither can ye, except ye abide in me.

Acts 11:23

who, when he was come, and had seen the grace of God, was glad; and he exhorted them all, that with purpose of heart they would cleave unto the Lord:

Acts 27:31

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

Hebrews 3:14

for we are become partakers of Christ, if we hold fast the beginning of our confidence firm unto the end:

Hebrews 6:4-8

For as touching those who were once enlightened and tasted of the heavenly gift, and were made partakers of the Holy Spirit,

Hebrews 9:11-12

But Christ having come a high priest of the good things to come, through the greater and more perfect tabernacle, not made with hands, that is to say, not of this creation,

Hebrews 9:15-17

And for this cause he is the mediator of a new covenant, that a death having taken place for the redemption of the transgressions that were under the first covenant, they that have been called may receive the promise of the eternal inheritance.

Hebrews 10:26-30

For if we sin wilfully after that we have received the knowledge of the truth, there remaineth no more a sacrifice for sins,

Hebrews 10:39

But we are not of them that shrink back unto perdition; but of them that have faith unto the saving of 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, except it abide in the vine; so neither can ye, except ye abide in me.
Acts 11:23
who, when he was come, and had seen the grace of God, was glad; and he exhorted them all, that with purpose of heart they would cleave unto the Lord:
Acts 27:31
Paul said to the centurion and to the soldiers, Except these abide in the ship, ye cannot be saved.
Hebrews 3:14
for we are become partakers of Christ, if we hold fast the beginning of our confidence firm unto the end:
Hebrews 6:4
For as touching those who were once enlightened and tasted of the heavenly gift, and were made partakers of the Holy Spirit,
Hebrews 10:26
For if we sin wilfully after that we have received the knowledge of the truth, there remaineth no more a sacrifice for sins,

After the death

Hebrews 9:11
But Christ having come a high priest of the good things to come, through the greater and more perfect tabernacle, not made with hands, that is to say, not of this creation,

American Standard Version Public Domain