en_tn/1co/01/24.md

to those whom God has called

"to the people God calls"

we preach Christ

"we teach about Christ" or "we tell all people about Christ"

we preach Christ as the power and the wisdom of God

Possible meanings are 1) "we preach that God acted powerfully and wisely by sending Christ to die for us" or "we preach that through Christ God has shown how strong and wise he is."

the power ... of God

Another possible meaning is that Christ is powerful and it is through Christ that God saves us.

the wisdom of God

Another possible meaning is that God shows the content of his wisdom through Christ.