Hebrews 7:10

for Levi was still in the loins (unborn) of his forefather [Abraham] when Melchizedek met him (Abraham).

Genesis 35:11

And God said to him,

“I am God Almighty.
Be fruitful and multiply;
A nation and a company of nations shall come from you,
And kings shall be born of your loins.

Genesis 46:26

All the persons who came with Jacob into Egypt—who were his direct descendants, not counting the wives of [Jacob or] Jacob’s sons, were sixty-six persons in all,

1 Kings 8:19

Nevertheless, you shall not build the house, but your son, who shall be born to you, it is he who shall build it for My Name [and My Presence].’

Hebrews 7:5

It is true that those descendants of Levi who are charged with the priestly office are commanded in the Law to collect tithes from the people—which means, from their kinsmen—though these have descended from Abraham.

Treasury of Scripture Knowledge

Summary

For he was yet in the loins of his father, when Melchisedec met him.

Bible References

General references

Hebrews 7:5
It is true that those descendants of Levi who are charged with the priestly office are commanded in the Law to collect tithes from the people—which means, from their kinsmen—though these have descended from Abraham.
Genesis 35:11
And God said to him,

“I am God Almighty.
Be fruitful and multiply;
A nation and a company of nations shall come from you,
And kings shall be born of your loins.
Genesis 46:26
All the persons who came with Jacob into Egypt—who were his direct descendants, not counting the wives of [Jacob or] Jacob’s sons, were sixty-six persons in all,
1 Kings 8:19
Nevertheless, you shall not build the house, but your son, who shall be born to you, it is he who shall build it for My Name [and My Presence].’