Synauxano (συναυξάνω) means to increase or grow at the same time, together — a compound of syn (together with) + auxano (to grow). It appears only in Matthew 13:30 in the parable of the wheat and weeds: 'Let both grow together (synauxano) until the harvest.' The word emphasizes the simultaneous, intertwined nature of the growth — wheat and weeds growing up together, entangled at the roots.
The parable of the wheat and weeds is one of Jesus' most profound eschatological teachings, and synauxano is at its center. The kingdom of God grows in the same world as the kingdom of evil — they grow together, intertwined, until the final harvest. This is why premature separation would harm the wheat. The patience required is not indifference but trust in the final harvest. God knows His wheat from the weeds.
Synauxano demands a theology of patience. The disciples would have separated wheat and weeds immediately — they couldn't tolerate the mixture. But the Lord says: synauxano, grow together, until I send the harvesters. The final separation is God's work, done at God's time, with God's precision. Our task is to grow as wheat, not to prematurely play the role of harvesters.