Contemporary English Version
When the people bring you their Passover lamb, you must kill it and prepare it to be sacrificed to the LORD. Make sure the people celebrate according to the instructions that the LORD gave Moses, and don't do anything to make yourselves unclean and unacceptable.

Douay-Rheims Bible
And being sanctified kill the phase, and prepare your brethren, that they may do according to the words which the Lord spoke by the hand of Moses.

And being sanctified kill the phase, and prepare your brethren, that they may do according to the words which the Lord spoke by the hand of Moses.

So kill

2 Chronicles 30:15-17 And they immolated the phase on the fourteenth day of the second month. And the priests and the Levites being at length sanctified offered holocausts in the house of the Lord. . . .

Exodus 12:6,21,22 And you shall keep it until the fourteenth day of this month; and the whole multitude of the children of Israel shall sacrifice it in the evening. . . .

Ezra 6:20,21 For all the priests and the Levites were purified as one man: all were clean to kill the phase for all the children of the captivity, and for their brethren the priests, and themselves. . . .

sanctify

2 Chronicles 29:5,15,34 And he said to them: Hear me, ye Levites, and be sanctified, purify the house of the Lord the God of your fathers, and take away all filth out of the sanctuary. . . .

2 Chronicles 30:3,15-19 For they could not keep it in its time; because there were not priests enough sanctified, and the people was not as yet gathered together to Jerusalem. . . .

Genesis 35:2 And Jacob having called together all his household, said: Cast away the strange gods that are among you, and be cleansed, and change your garments.

Exodus 19:10,15 And he said to him: Go to the people, and sanctify them to day, and to morrow, and let them wash their garments. . . .

Numbers 19:11-20 He that toucheth the corpse of a man, and is therefore unclean seven days, . . .

Job 1:5 And when the days of their feasting were gone about, Job sent to them, and sanctified them: and rising up early, offered holocausts for every one of them. For he said: Lest perhaps my sons have sinned, and have blessed God in their hearts. So did Job all days.

Psalm 51:7 Thou shalt sprinkle me with hyssop, and I shall be cleansed: thou shalt wash me, and I shall be made whiter than snow.

Joel 2:16 Gather together the people, sanctify the church, assemble the ancients, gather together the little ones, and them that suck at the breasts: let the bridegroom go forth from his bed, and the bride out of her bridal chamber.

Hebrews 9:13,14 For if the blood of goats and of oxen, and the ashes of an heifer, being sprinkled, sanctify such as are defiled, to the cleansing of the flesh: . . .