John 5:18

. ‘This was why the Jews sought the more to kill Him (i.e. to plot His death) because He not only broke the Sabbath, but also called God ‘His own Father' (patera idion) making Himself equal with God'.

Rather than recognise the logic of the situation they look for more reasons for attacking Him. They would not let the light in and so their hearts were darkened. Note that they recognised that He was claiming that God was His Father in a unique sense. That is why He always taught others to say, ‘OUR Father' (not including Himself) while He Himself spoke of ‘My Father'. The Pharisees at least clearly recognised that claim, but for the wrong reasons. His claim that His right to work should be compared with God's in relation to the Sabbath was sufficient for them in itself, but His reference to God as His Father confirmed the position. He was a blasphemer. They never stopped to ask themselves how a blasphemer could heal sick men. They simply glossed it over.

So the incident ends with a clear conclusion, that in it Jesus has made Himself out to be equal with God. This is apparent from His claim to rights over the Sabbath as a result of His co-working with the Father, and the fact that He can call God His own Father. They recognised the implication, but failed to recognise the consequence of the healing having taken place.