“Go and learn what this means” (Matt 9:13 NKJV)
Jesus was speaking to the critics of his day about calling sinners and not the righteous when he said the words written above. His critics (the Pharisees) were sceptical, critical of his eating with tax collectors and sinners and unbelieving of his gospel message, but Jesus was still trying to reach them with the message of eternal salvation (“God...who desires all men to be saved and come to a knowledge of the truth.” 1 Tim 2:3-4). Some people who hear the gospel (meaning, 'good news') believe immediately and need no further persuasion that Jesus is the way. Others, need to 'go and learn' – which may mean reading the bible or Christian books, or listening further to preaching and testimonies of those who can clearly explain to them the way of salvation. It might be days, months or even years before they are ready – it takes time. Perhaps you know someone who's just like that. Well, don't give up on them. Encourage them and pray for them, but don't push them too hard. Let a seeking soul learn at its own pace. Very often, there's much going on behind the scenes which we can't see and they are simply coming to Calvary by a different road than you. Remember the well known part of scripture, love is patient...(1Cor 13:4).