Multi-Translation Layout:  

Romans 1:21

21 Because that, when they knew God, they glorified him not as God, neither were thankful; but became vain in their imaginations, and their foolish heart was darkened.

Romans 1:21

21 because that, knowing God, they glorified him not as God, neither gave thanks; but became vain in their reasonings, and their senseless heart was darkened.

Romans 1:21

21 Because, knowing God, they glorified [him] not as God, neither were thankful; but fell into folly in their thoughts, and their heart without understanding was darkened: