# the kind actions and the severity of God

Paul is reminding the Gentile believers that although God may act very kindly toward them, he will not hesitate to judge and punish them.

# severity came on the Jews who fell ... God's kindness comes on you

"God dealt harshly with the Jews who fell ... God acts kindly toward you" 

# the Jews who fell

"the Jews who have refused to trust in Christ" 

# if you continue in his kindness

"if you continue doing what is right so that he continues being kind to you"

# Otherwise you also will be cut off

"Otherwise God will also reject you"