'Weighty' in the Bible

So there was hail, and lightning (fireballs) flashing intermittently in the midst of the extremely heavy hail, such as had not been in all the land of Egypt since it became a nation.

How precious also are Your thoughts to me, O God!How vast is the sum of them!

It is not good to eat much honey; and to search into weighty matters is itself a weight.

A stone is heavy, and the sand weighty; but a fool's wrath is heavier than them both.

Furthermore, what the king demands is an unusual and difficult thing indeed! No one except the gods can reveal it to the king, and their dwelling is not with [mortal] flesh.”

and whoever may cause to stumble one of those little ones who are believing in me, it is better for him that a weighty millstone may be hanged upon his neck, and he may be sunk in the depth of the sea.

it is more profitable to him if a weighty millstone is put round about his neck, and he hath been cast into the sea, than that he may cause one of these little ones to stumble.

and he having come, there stood round about the Jews who have come down from Jerusalem -- many and weighty charges they are bringing against Paul, which they were not able to prove,

For his letters, say they, are weighty and powerful; but his bodily presence is weak, and his speech contemptible.

And great, we confess, is the mystery [the hidden truth] of godliness:He (Jesus Christ) who was revealed in human flesh,Was justified and vindicated in the Spirit,Seen by angels,Preached among the nations,Believed on in the world,Taken up in glory.