{So the father knew} (egn(9320)oun ho pat(8872)). Second aorist
active indicative of gin(9373)k(935c). Inferential use of oun.
{Himself believed} (episteusen autos). Not just the word of
Jesus (verse  50 ), but complete faith in Jesus himself as the
Messiah, absolute use of pisteu(935c) as in  1:7 . {And his whole
house} (kai h(8820)oikia autou). All his family, the first example
of a whole family believing in Jesus like the later case of
Crispus ( Ac 18:8 ).