G3966–πατριάρχης–patriarchēs

"As to the patriarch David, I need hardly remind you, brethren, that he died and was buried, and that we still have his tomb among us.

πατριάρχου patriarchou “patriarch”

"Then He gave him the Covenant of circumcision, and under this Covenant he became the father of Isaac--whom he circumcised on the eighth day. Isaac became the father of Jacob, and Jacob became the father of the twelve Patriarchs.

πατριάρχας. patriarchas “patriarchs.”

"The Patriarchs were jealous of Joseph and sold him into slavery in Egypt. But God was with him

πατριάρχαι patriarchai “patriarchs”

Now think how great this priest-king must have been to whom Abraham the patriarch gave a tenth part of the best of the spoil.

πατριάρχης. patriarchēs “patriarch.”