I believe God calls us to openness when He saves us. We need to be open to Him and others in obedience to Him. If we're keeping secrets from Him, we're kidding ourselves and being inconsistent with a hope to be wholly given to Him.
The matter of transparency comes with trust. When we trust the Lord more, we are more open to Him. This would be known as spiritual growth. Our trust in each other is also marked by a willingness to be transparent. The lack of openness in our journey often translates as deception. There are a few matters in our lives that we ought not bother others with their knowledge. Apart from these, our openness can facilitate a freedom in Christ that has no need of a good memory for fear of getting our stories straight.
Jude 1:21 (MSG)
21 staying right at the center of God's love, keeping your arms open and outstretched, ready for the mercy of our Master, Jesus Christ. This is the unending life, the real life!