John 15:2-3

He will cut off [See verse 6] every branch [i.e., follower of Christ] who is in [fellowship with] me that does not bear fruit. And He will prune every branch that does bear fruit, so it will bear more fruit.

John 17:17

Set them apart [i.e., for your service] through the truth; your word is truth.

John 17:19

And for their sakes I dedicate myself [to you] so that they themselves also may be truly dedicated [to you].

1 Corinthians 1:30

But God brought you into [fellowship with] Christ Jesus, who was made to be God's wisdom for us. Through Christ you have received a right relationship with God, [as well as] holiness and redemption [i.e., being bought back from Satan].

Hebrews 9:14

how much more will the blood of Christ, who through the eternal Holy Spirit [or, His eternal Spirit] offered Himself without [moral] blemish to God, cleanse our consciences from deeds which lead to [spiritual] death to serve the living God?

Treasury of Scripture Knowledge

Summary

And a clean person shall take hyssop, and dip it in the water, and sprinkle it upon the tent, and upon all the vessels, and upon the persons that were there, and upon him that touched a bone, or one slain, or one dead, or a grave:

Bible References

General references

John 15:2
He will cut off [See verse 6] every branch [i.e., follower of Christ] who is in [fellowship with] me that does not bear fruit. And He will prune every branch that does bear fruit, so it will bear more fruit.
John 17:17
Set them apart [i.e., for your service] through the truth; your word is truth.
1 Corinthians 1:30
But God brought you into [fellowship with] Christ Jesus, who was made to be God's wisdom for us. Through Christ you have received a right relationship with God, [as well as] holiness and redemption [i.e., being bought back from Satan].
Hebrews 9:14
how much more will the blood of Christ, who through the eternal Holy Spirit [or, His eternal Spirit] offered Himself without [moral] blemish to God, cleanse our consciences from deeds which lead to [spiritual] death to serve the living God?