Numbers 18:16
Those that can be redeemed, you are to redeem at the age of one month, based on your estimate for five shekels of silver, according to the shekel of the sanctuary, that is, for 20 gerahs.
Exodus 30:13
This is what everyone who is registered is to give: half a shekel according to the shekel of the sanctuary (the shekel weighs 20 gerahs), half a shekel as a contribution to the LORD.
Numbers 3:47
so collect five shekels for each individual, denominated in shekels of the sanctuary, that is, the shekel that weighs 20 gerahs.
Leviticus 27:2-7
"Tell the Israelis that when a person makes a special vow based on the appropriate value of people who belong to the LORD,
Leviticus 27:25
Every valuation is to be according to the shekel of the sanctuary, evaluated at 20 gerahs to the shekel.
Ezekiel 45:12
The shekel is to weigh 20 gerahs. The mina is to be comprised of three coins weighing 20, 25, and fifteen shekels, respectively.'"