'Upright' in the Bible

This only have I seen, that God made men upright, but they have been searching out all sorts of inventions.

All this I took to heart, and my heart saw it all: that the upright and the wise and their works are in the hand of God; and men may not be certain if it will be love or hate; all is to no purpose before them.

Because to all there is one event, to the upright man and to the evil, to the clean and to the unclean, to him who makes an offering and to him who makes no offering; as is the good so is the sinner; he who takes an oath is as he who has fear of it.

The Preacher made search for words which were pleasing, but his writing was in words upright and true.