Numbers 8:11

And Aaron
<0175>

shall offer
<05130> (8689)

the Levites
<03881>

before
<06440>

the LORD
<03068>

[for] an offering
<08573>

of the children
<01121>

of Israel
<03478>_,

that they may execute
<05647> (8800)

the service
<05656>

of the LORD
<03068>_.

{offer: Heb. wave} {offering: Heb. wave offering} {they...: Heb. they may be to execute, etc}

Numbers 8:21

And the Levites
<03881>

were purified
<02398> (8691)_,

and they washed
<03526> (8762)

their clothes
<0899>_;

and Aaron
<0175>

offered
<05130> (8686)

them [as] an offering
<08573>

before
<06440>

the LORD
<03068>_;

and Aaron
<0175>

made an atonement
<03722> (8762)

for them to cleanse
<02891> (8763)

them.