Ephesians 1:9

having made known to us the mystery of His will, according to His good pleasure which He purposed in Himself,

Surrounding context

1:8 which He made to abound toward us in all wisdom and prudence,

1:9 having made known to us the mystery of His will, according to His good pleasure which He purposed in Himself,

1:10 that in the dispensation of the fullness of the times He might gather together in one all things in Christ, both which are in heaven and which are on earth--in Him.

Translation and sources