<p>5:10 <i>Proving what is well-pleasing to the Lord</i>- &quot;Proving&quot; can mean 'experiencing'. I have argued on :7 and :9 that the context here is of the movement of the Spirit. The same Greek words for &quot;proving&quot; and &quot;well-pleasing&quot; / 'acceptable' are to be found in Rom. 12:2: &quot;Do not conform to the mould of this world, but be transformed by the renewing of your mind, that you may experience s.w. &quot;proving&quot;, Eph. 5:10) what is the good and acceptable s.w. &quot;well-pleasing&quot;, Eph. 5:10 and the perfect will of God&quot;. The renewing and transformation of the mind / spirit is the work of the Spirit gift which we accept at baptism into the Lord Jesus. Here in Ephesians Paul is asking us to allow the Spirit free course, to experience- for this is the way to transformation in practice, rather than by trying to force our flesh to change by steel willed self control.</p>