Numbers 31

2 witnesses of Christ here.

Red heifer (water of separation)

And do ye abide without the camp seven days: whosoever hath killed any person, and whosoever hath touched any slain, purify both yourselves and your captives on the third day, and on the seventh day. Numbers 31:19–24

The 'water of separation' was made with the ashes of the red heifer and cleansed people who had touched death, on the third and seventh days. Hebrews teaches that if those ashes could cleanse the body, the blood of Christ much more cleanses our consciences.

VerifiedProphecy or typeAn ordinance that points to Him

How we know: another scripture interprets it of Him · a traditional type, cited

alludes to Numbers 19:9 — The ashes of the heifer are kept 'for a water of separation: it is a purification for sin.'
alludes to Numbers 19:12 — The same third-day and seventh-day purification rule applied here.
interpreted by Hebrews 9:13-14 — The ashes of an heifer sanctify the flesh; the blood of Christ purges the conscience.

Atonement

We have therefore brought an oblation for the LORD, what every man hath gotten, of jewels of gold, chains, and bracelets, rings, earrings, and tablets, to make an atonement for our souls before the LORD. Numbers 31:50

Grateful that not one man was lost, the officers bring gold 'to make an atonement for our souls.' It echoes the ransom money of the law, but Peter reminds us that we are not redeemed with silver and gold, but with the precious blood of Christ.

VerifiedEchoAn echo of Him

How we know: a traditional type, cited

alludes to Exodus 30:15-16 — The atonement money given 'to make an atonement for your souls' (the Church footnote note50_c points here).
a type of what is in 1 Peter 1:18-19 — Redemption comes not with silver and gold but with the blood of Christ, the lamb without blemish.