en_tn/heb/07/17.md

For scripture witnesses about him

This speaks about scripture as if it were a person who could witness about something. AT: "For God witnesses about him through the scriptures" or "For this is what was written about him in the scripture" (See: rc://en/ta/man/translate/figs-personification)

after the manner of Melchizedek

This means that Christ as a priest has things in common with Melchizedek as a priest. AT: "in the same way that Melchizedek was a priest"