How can one know the will of God? That question is not only frequently asked in our day, but has often been asked by followers of God throughout much of, if not all of, history.
Here is an answer from pastor John Newton in one of his many letters. Though written a couple of centuries ago, the admonition is both biblical and clear and thus still appropriate for our own ears today:
But how then may the Lord’s guidance be expected? After what has been premised negatively, the question may be answered in a few words. In general, he guides and directs his people, by affording them, in answer to prayer, the light of his Holy Spirit, which enables them to understand and to love the Scriptures. The word of God is not to be used as a lottery; nor is it designed to instruct us by shreds and scraps, which, detached from their proper places, have no determinate import; but it is to furnish us with just principles, right apprehensions to regulate our judgements and affections, and thereby to influence and direct our conduct. They who study the Scriptures, in an humble dependence upon divine teaching, are convinced of their own weakness, are taught to make a true estimate of everything around them, are gradually formed into a spirit of submission to the will of God, discover the nature and duties of their several situations and relations in life, and the snares and temptations to which they are exposed. The word of God dwells richly in them, is a preservative from error, a light to their feet, and a spring of strength and consolation. By treasuring up the doctrines, precepts, promises, examples, and exhortations of Scripture, in their minds, and daily comparing themselves with the rule by which they walk, they grow into an habitual frame of spiritual wisdom, and acquire a gracious taste, which enables them to judge of right and wrong with a degree of readiness and certainty, as a musical ear judges of sounds. And they are seldom mistaken, because they are influenced by the love of Christ, which rules in their hearts, and a regard to the glory of God, which is the great object they have in view.
In particular cases, the Lord opens and shuts for them, breaks down walls of difficulty which obstruct their path, or hedges up their way with thorns, when they are in danger of going wrong, by the dispensations of his providence. They know that their concernments are in his hands; they are willing to follow whither and when he leads; but are afraid of going before him. Therefore they are not impatient: because they believe, they will not make haste, but wait daily upon him in prayer; especially when they find their hearts most engaged in any purpose or pursuit, they are most jealous of being deceived by appearances, and dare not move farther or faster than they can perceive his light shining upon their paths. I express at least their desire, if not their attainment: thus they would be. And though there are seasons when faith languishes, and self too much prevails, this is their general disposition; and the Lord, whom they serve, does not disappoint their expectations. He leads them by a right way, preserves them from a thousand snares, and satisfies them that he is and will be their guide even unto death. [Divine Guidance]