This paper investigates relation between modal and future meanings of the Old Church Slavonic infinitival constructions with iměti and xotěti. The future tense and expression of hypothetical values are closely interconnected. Utterances, referring to an obligation, permission, prohibition (or possibility and necessity as the case may be) to materialize an action, are always directed towards the future, they are alvays open forwards with the stream of time. The construction of the verb iměti with infinitive includes a semantic component of fatal necessity, predetermination, which is closely connected with the meaning of obligation. the meaning of predestination (i. e., theodeontic necessity) may imply, in certain contexts, a forecast, prediction and, consequently, reference with respect to the future. The expression of will, but also of desire, intention and purpose, are the initial functions of the verb xotěti. The prediction usage of wish and intention also represents the usual way towards the future.