Isaiah 45:15

The nations that will come to God, or perhaps Isaiah himself or Israel, observed that God hides His acts of salvation so they are not obviously apparent. They become clear to those who carefully observe what He has done, and whom God enlightens, but they do not inevitably impress every single individual. One might say the same thing about Jesus’ claims. They could have been clearer, but to those who really considered them, and whose eyes God opened, they were clear. This is essentially a testimony to God’s transcendence (cf. Romans 11:33).