God has a strong heart for the Jews. That is clear from page 1 of the Bible.
Also present from page 1, but maybe not so clear, is God's heart for the Gentiles. They are mentioned 100 of times mostly as the NATIONS. It is a great exercise to WATCH for this terminology as His Kingdom expands geographically throughout time.
But in todays verse, quite curiously, Jesus says NOT NOW to the Gentiles. The call to the Gentiles is restored later in the Gospels, famously in Matt 28:19 Go therefore and make disciples of ALL NATIONS...
Listen to the call, and the NOT CALL