Blessed Emmanuel Ruiz and Companions: "Jesus summoned his Twelve disciples"

... instructing them thus, "Do not go into pagan territory or enter a Samaritan town.
Go rather to the lost sheep of the house of Israel. As you go, make this proclamation: 'The Kingdom of heaven is at hand.' "

-- Mt 10:1-7

Everyone is called to enter the kingdom. First announced to the children of Israel, this messianic kingdom is intended to accept men of all nations. To enter it, one must first accept Jesus' word:

The word of the Lord is compared to a seed which is sown in a field; those who hear it with faith and are numbered among the little flock of Christ have truly received the kingdom. Then, by its own power, the seed sprouts and grows until the harvest.

-- CCC 543

Art: Duccio Di Buoninsegna