Having patiently endured (μακροθυμησας). First aorist active participle of μακροθυμος (μακροσ, θυμος, long spirit) illustrating μακροθυμια of verse Hebrews 6:12.

He obtained (επετυχεν). Second aorist (effective) active indicative of επετυγχανω, old verb with genitive. God was true to his word and Abraham was faithful.