We are meant, says Paul, to give thanks 'in everything'. What Paul is saying is that a thankful disposition aligns our perspective, by faith, with that of God. In an unrenewed church, where 'means' rather than 'ends' occupy most of the agendas for most of the meetings, there are often endless hours of discussion about procedures, precedents, and other similar matters. Such leaders are encouraged to submit to the learnings the Spirit is inculcating in the church in these times, particularly through reading, attending seminars, exposing themselves to growth-producing encounters. Spiritual wisdom comes from reflection, which is also nurtured by an intentional teaching ministry in the church.
Revelation is a foundational biblical concept.
The Bible is simply recorded testimony of God's revelation to us. The living God is both subject and object of revelation. Our earnest prayer is for a renewed mind which will 'know him more clearly, day by day'. Paul then prays for 'enlightenment' of literally 'the eyes of your hearts'. The 'heart' is the seat of knowledge and understanding as well as of love, conscience, emotions and is sometimes translated 'mind'.