Putting head on slant six

So I have got it all back together. Bought a new battery, new starter relay, dash lights are on with key in on position, door buzzer buzzing and I go to turn the key and ...... nothing.

I jumped the starter with my battery and it’s cranking just fine. What should I do?

It’s not the battery because that’s new, it’s not the starter relay because that’s new, I doubt it is the starter because I jumped it with my battery and it seems to be working ok.

Any ideas?