Numbers 18:16

And those that are to be ransomed from a month old shalt thou ransom, according to thy valuation, for the money of five shekels, after the shekel of the sanctuary, which is twenty gerahs.

Exodus 30:13

This shall they give every one that passeth among them that are numbered half a shekel after the shekel of the sanctuary, twenty gerahs the shekel; a half shekel shall be the heave-offering for Jehovah.

Numbers 3:47

thou shalt take five shekels apiece by the poll, according to the shekel of the sanctuary shalt thou take them, twenty gerahs the shekel;

Leviticus 27:2-7

Speak unto the children of Israel and say unto them, When any one devoteth anything by a vow, the persons shall be for Jehovah according to thy valuation.

Leviticus 27:25

And all thy valuation shall be according to the shekel of the sanctuary: twenty gerahs shall be the shekel.

Ezekiel 45:12

And the shekel shall be twenty gerahs; twenty shekels, five and twenty shekels, fifteen shekels, shall be your maneh.

Treasury of Scripture Knowledge

Summary

And those that are to be redeemed from a month old shalt thou redeem, according to thine estimation, for the money of five shekels, after the shekel of the sanctuary, which is twenty gerahs.

General references

Bible References

According

Numbers 3:47
thou shalt take five shekels apiece by the poll, according to the shekel of the sanctuary shalt thou take them, twenty gerahs the shekel;
Leviticus 27:2
Speak unto the children of Israel and say unto them, When any one devoteth anything by a vow, the persons shall be for Jehovah according to thy valuation.

Which is

Exodus 30:13
This shall they give every one that passeth among them that are numbered half a shekel after the shekel of the sanctuary, twenty gerahs the shekel; a half shekel shall be the heave-offering for Jehovah.
Leviticus 27:25
And all thy valuation shall be according to the shekel of the sanctuary: twenty gerahs shall be the shekel.
Ezekiel 45:12
And the shekel shall be twenty gerahs; twenty shekels, five and twenty shekels, fifteen shekels, shall be your maneh.

General references

Numbers 3:15
Number the sons of Levi according to their fathers' houses, after their families; every male from a month old and upward shalt thou number them.