Gary Tyra.  Pursuing Moral Faithfulness: Ethics and Christian Discipleship.  Downers Grove: IVP Academic, 2015.  See here to buy the book.
Gary Tyra teaches biblical and practical theology at Vanguard 
University.  Tyra has observed that a number of Christian young people 
either do not give much thought to the way that they make ethical 
decisions, or they make ethical decisions like others in their peer 
group (i.e., they do what is socially acceptable, or what feels good or 
right to them).
In Pursuing Moral Faithfulness, Tyra looks for a model of 
ethics that can serve as a foundation for moral faithfulness, within a 
Christian context.  He believes that there are weaknesses in 
utilitarianism and in both relativistic and absolutist approaches.  Tyra
 ultimately settles on two principles.  First, he emphasizes the 
importance of Micah 6:8, which affirms that God requires people to do 
justice, to love mercy, and to walk humbly with God.  Second, Tyra 
stresses the importance of believers being personally guided by the Holy
 Spirit as they make ethical decisions.  Tyra believes that there are 
moral rules, but he also thinks that there are many ethical decisions 
that are contexual and that require the Holy Spirit’s guidance.  
Moreover, Tyra does not support making Christian ethics primarily a 
matter of keeping rules, for he maintains that a relationship with God 
is important.  I should also add that Tyra values consulting other 
Christians about ethical decisions, for they can provide support and 
guidance.
This book will be useful to people who are interested in a lucid 
description of the thoughts of Jeremy Bentham, John Stuart Mill, and 
Immanuel Kant.  Tyra narrates how Bentham qualified his claim that 
ethics was a matter of maximizing pleasure and minimizing pain, and how 
religion fit into (and did not fit into) Kant’s views of ethics.
The book is also interesting, and eye-opening, as it talks about what
 people have said about ethics.  One thinker whom Tyra profiles 
maintains that love should be the focus of ethics, and this thinker 
posits that prostitution may be acceptable to counter espionage, and 
that a terminally ill man may be right to refuse medical treatment out 
of concern for his family’s financial situation.  Another Christian 
thinker said that mentally and physically complete people are more 
valuable than those with deficiencies in these areas (which shocked and 
appalled me), as well as argued that Exodus 21:22-23 shows that a mother
 is of more value than a fetus (which surprised me, considering the 
opposition of many conservative evangelicals to abortion).  Going to the
 opposite extreme, another Christian view implied that a family hiding 
Jews from the Nazis should tell the Nazis where the Jews are if the 
Nazis ask, rather than lying, and that this family should trust in God 
to work things out.  (I thought, “What’s God going to do?”)  Tyra also 
mentions a survey of Christian young people regarding their ethical 
beliefs.  While a number of these young people believed in being kind to
 others, they did not think that they were really obligated to help 
people: they viewed that as an option, but not as a moral obligation.
A view that I, and also Tyra, found intriguing said that Christians 
may find themselves having to choose the lesser of two evils, and that, 
while this may be acceptable morally, they should still ask God for 
forgiveness for their choice.  While Tyra does not fully embrace this 
view, he does consider it intriguing because it implies that sin is 
still a matter of grave concern to God, even if there may be situations 
in which a Christian may find it to be a better option.  I find this 
view interesting because it seems to run contrary to what I hear 
Christians say about repentance being necessary to receive God’s 
forgiveness.  If a person made a decision, and would make that decision 
again if he had to do it all over again because the alternative was 
worse, should he ask for God’s forgiveness?  He is not really repentant,
 right?
Tyra effectively knocks down a variety of ethical approaches, while 
holding on to the aspects of them that he considers valid, correct, or 
helpful.  One could ask, though, if his own model is better at handling 
moral dilemmas.  Maybe, or maybe not.  Either way, Tyra does well in 
providing a model of how Christians can approach ethical decisions in a 
thoughtful manner, and he provides questions that they can ask 
themselves when they are confronted with an ethical decision.
I received a complimentary review copy of this book from IVP Academic in exchange for an honest review.