'Strong' in the Bible

and in the third chariot white horses, and in the fourth chariot strong grisled horses.

and the strong ones have come forth, and they seek to go to walk up and down in the earth;' and he saith, 'Go, walk up and down in the earth;' and they walk up and down in the earth.

Thus said Jehovah of Hosts: Let your hands be strong, Ye who are hearing in these days these words from the mouth of the prophets, That in the day the house of Jehovah of Hosts Hath been founded, the temple is to be built.

And it hath come to pass, As ye have been a reviling among nations, O house of Judah, and house of Israel, So I save you, and ye have been a blessing, Do not fear, let your hands be strong.