estaban adhiriendo
-they/you were sticking
Imperfecto progresivo para el sujetoellos/ellas/ustedesdel verboadherir.

adherir

Declararon que muchos se estaban adhiriendo a los apóstoles, y sugirieron que lo hacían con secretos y peligrosos designios.
They declared that large numbers were attaching themselves to the apostles and suggested that it was for secret and dangerous designs.
Palabra del día
amasar