<p>3:15 <i>Let us therefore, as many as are mature, be thus decided; and if in anything you are otherwise decided, this also shall God reveal to you</i>- &quot;Mature&quot; or &quot;perfect&quot; (s.w.) is the state which Paul says we have not yet attained (:12). But we are counted as perfect by being in Christ. &quot;Decided&quot; is literally &quot;minded&quot; (AV). Paul repeatedly brings everything back to the state of our hearts, how we think, and whether we are letting the Spirit operate within us or not. Those who have received the Spirit will be thinking of the things of the Spirit (Rom. 8:5 s.w.). The &quot;mind&quot; we should have is that of the Lord Jesus, and that is a gift, of His Spirit (Rom. 15:5). The same word has been used in 2:2,5 of how we should have the mind or spirit of Christ in His time of dying on the cross. In the immediate context, the &quot;mind&quot; we should have is one of pressing toward the goal or finishing line of final and total identity with the Lord Jesus. But a mindset is an outlook which incorporates many aspects of thinking, attitude and behaviour. In some things we will be out of step with the total mind of Christ; the work of the Spirit is to transform us towards His image in every way. And so in those things or aspects wherein we are 'otherwise minded', the Spirit will reveal these areas to us. We think of how the Lord used the same word in commenting that the Father, rather than the unaided mental strength of the flesh, had &quot;revealed&quot; the Lord to Peter (Mt. 16:17). The Father both hides and reveals things to people (Lk. 10:21); and He does all things by the Spirit. The arm of the Lord has to be revealed to men (Jn. 12:38). 1 Cor. 2:10 is clear as to the connection between the Spirit and God's 'revealing' things to believers: &quot;God has revealed them unto us by His Spirit&quot; (also Eph. 3:5). God revealed His Son <i>within</i> Paul (Gal. 1:16). Stage by stage, aspect by aspect, those areas of our thinking and being which are not of the spirit of Christ will be revealed to us, so that we might move towards that total transformation into Christ which shall be at the last day.</p>