A.T. Robertson Commentary Luke 21:31

"Even so ye also, when ye see these things coming to pass, know ye that the kingdom of God is nigh." — Luke 21:31 (ASV)

Coming to pass (γινομενα). Present middle participle of γινομα and so descriptive of the process.

Nigh (εγγυς). The consummation of the kingdom is here meant, not the beginning.