1 - The god of Paul. A god too hard to understand. Hence, he implied that we did not have to understand to walk by faith. (II Cor. 5:7)
2 - Not quite the same thing. The Jews prefer to walk by sight than by faith. (II Cor. 5:7) They prefer to understand the way they walk and whereto. Hence Deut. 4:6 "This great nation is truly a wise and intelligent People."
3 - That's what you think! If we express the desire to learn, the Lord will allow us the evidence of faith.
The LORD Jehovah did not tell Abraham to study, he said:
Gen 15:5 And he brought him forth abroad, and said, Look now toward heaven, and tell the stars, if thou be able to number them: and he said unto him, So shall thy seed be.
Gen 15:6 And he believed in the LORD; and he counted it to him for righteousness.
Abraham believed, and I will tell you assuredly that today Abraham knows what he first had to believe by faith.
Moses didn't believe and look what happened:
Deu 1:29 Then I said unto you, Dread not, neither be afraid of them.
Deu 1:30 The LORD your God which goeth before you, he shall fight for you, according to all that he did for you in Egypt before your eyes;
Deu 1:31 And in the wilderness, where thou hast seen how that the LORD thy God bare thee, as a man doth bear his son, in all the way that ye went, until ye came into this place.
Deu 1:32
Yet in this thing ye did not believe the LORD your God,
Deu 1:33 Who went in the way before you, to search you out a place to pitch your tents in, in fire by night, to shew you by what way ye should go, and in a cloud by day.
Deu 1:34 And the LORD heard the voice of your words, and was wroth, and sware, saying,
Deu 1:35 Surely there shall not one of these men of this evil generation see that good land, which I sware to give unto your fathers,
Jesus said here is how we will see the promise land:
Joh 11:21 Then said Martha unto Jesus, Lord, if thou hadst been here, my brother had not died.
Joh 11:22 But I know, that even now, whatsoever thou wilt ask of God, God will give it thee.
Joh 11:23 Jesus saith unto her,
Thy brother shall rise again.
Joh 11:24 Martha saith unto him,
I know that he shall rise again in the resurrection at the last day.
Joh 11:25 Jesus said unto her,
I am the resurrection, and the life: he that believeth in me, though he were dead, yet shall he live:
Joh 11:26 And
whosoever liveth and believeth in me shall never die. Believest thou this?
Joh 11:27 She saith unto him, Yea, Lord: I believe that thou art the Christ, the Son of God, which should come into the world.
Again, One must say "Yea, Lord: I believe that thou art the Christ, the Son of God, which should come into the world."