Contemplating the scene on Jesus taking a child and setting him by his side points out the child-like attitude of lowliness and humility which Jesus wanted his disciples to have.
This is what Jesus wants us to accept - humility - which comes as insignificant and seen as weakness by the world. As the followers of Jesus, we are called to imbue these attitudes in our mission to the world.
The second part of the Gospel deals with another attitude required of discipleship, namely, openness, especially towards the non-disciples. This passage shows the extent of Jesus' power at work through his name. Thus, even those outside the company of the disciples can share.
This is true in a multi-religious society where 'the dialogue of life' with people of other faiths has a witnessing aspect of discipleship. Such acts on our part can bring about the 'bridge' between believers and non-believers, thus establishing harmony among all!
With this, we are convinced that God's promise is fulfilled in what is echoed in Zec 8:8.
"They shall be my people, and I will be their God in faithfulness and integrity." By this, we are much consoled that God protects us always even when trials and difficulties challenge us.
"Lord, thank You for re-affirming that we shall be God's people, and He will be our God in faithfulness and integrity".