Firstly, there is no contradiction between true faith and reason. True faith is a reliance on the things that have warranted some level of trust. As such, having faith in a spouse, for example, is not unreasonable if that spouse has proven the fidelity through their words and actions. Belief in God is not an unreasonable leap into the darkness as some may maintain. It is rooted in evidence from the effects of the uncaused first cause. Scientific knowledge, the human mind and conscience, the intrinsic transcendent human ethic, and much more, all point to the reality of a supreme Being beyond the confines of the natural reality, who transcends nature and unbound by its laws, though unseen, can be understood to exist through His effects and experienced through the soul which He has given us.
The supernatural realm is not antithetical to the natural. Though sometimes it transcends it, still other times and arguably more often than not, God uses the natural laws which He Himself created, in the promotion of ultimate goodness resonated through His will.
The multicultural world promotes the notion that many roads lead to the same god through various religious paths. Not only is this unreasonable as most world religions contradict one another in major ways, but the sentiment only finds acclaim in the wake of the postmodern relativistic ideas where truths have been turned upside down and become cultural preferences. The reality is that there is one God manifested through three persons, and we're not speaking in terms of human persons, but mere distinctions within a single Being. This Being is understood to be the Holy Trinity, and is revealed to be God, the father; God, the son; and God, the holy spirit.
It is impossible for the human mind to fully grasp the concept of the Holy Trinity, just like it is to grasp concepts such as "nothingness." Therefore, though we may have a hard time fully comprehending it, we can quite easily apprehend it since it is without contradiction and is clearly communicated in the biblical text. In trying to understand the nature of God we need to prescribe anthropomorphisms in order to relate. Therefore, though God has no gender since God is spirit, He is nonetheless referred to in general gender terms so that our minds may apprehend His essence.
God condescended Himself and took on the flesh of man in the person of Jesus Christ. Therefore, Jesus Christ is 100% God and 100% man. He lived, performed miracles, healed multitudes, was crucified and died on the cross, and raised himself from the dead to lay claim to His deity. Man is essentially wicked having been alienated from God through his own disobedience. Everyone is in a perilous state and the love and grace freely offered by God to everyone who would consciously receive it is the only means by which anyone can have reconciliation with God.