Jesus is like any other "mythological" figure[0] in that the narratives presented about him reflect the specific cultural and political biases of the authors, and serve to frame their particular agenda. It doesn't surprise me at all that the motif of "Jesus as conquering king" would make it into a Biblical canon commissioned by a king in part to solidify their claim of authority through divine right, while others might fall by the wayside and be declared heresies.
[0] not in the sense of being purely fictional - it's likely there was an actual "Jesus," supernatural claims aside - but in the sense of being mythologized and having stories written about oneself which may or may not be true but tend to form some cultural canon.
[0] not in the sense of being purely fictional - it's likely there was an actual "Jesus," supernatural claims aside - but in the sense of being mythologized and having stories written about oneself which may or may not be true but tend to form some cultural canon.